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Question

我正在尝试创建在线商店。按类别分类，产品按类别正确过滤。现在，我尝试按品牌和其他属性来筛选类别中的产品。但这不起作用。

#Models
class Product(models.Model):
    name = models.CharField(max_length=255)
    slug = models.SlugField(max_length=255, unique=True)
    category = TreeForeignKey('Category', related_name='products', on_delete=models.CASCADE)
    vendor = models.ForeignKey('Vendor', related_name='vendors', on_delete=models.CASCADE, blank=True, null=True)

class Vendor(models.Model):
    name = models.CharField(max_length=100)
    slug = models.SlugField(max_length=100, unique=True)

#urls
urlpatterns = [
    path('catalog/<slug:slug>/', views.category_catalog, name='category_catalog')
]

#views
def category_catalog(request, slug=None):
    category = get_object_or_404(Category, slug=slug)
    breadcrumbs = Category.get_ancestors(category, include_self=True)
    # cat = Product.objects.filter(category__in=Category.objects.get(id=category.id).get_descendants())

if category.get_level() <= 1:
    cat = category.get_descendants().order_by('tree_id', 'id', 'name')

    return render(request, 'shop/category_catalog.html', {'category': category,
                                                          'cat': cat,
                                                          'menu': menu(request),
                                                          'breadcrumbs': breadcrumbs})
if category.get_level() >= 2:
    list_pro = Product.objects.filter(category__in=Category.objects.get(id=category.id)\
                                           .get_descendants(include_self=True)) \
                                           .annotate(min_price=Min('prices__price'))

    vendors_ids = list_pro.values_list('vendor_id', flat=True).order_by().distinct()
    vendors = Vendor.objects.filter(id__in=vendors_ids)
    filter = BrandFilter(queryset=Vendor.objects.all())

    print(filter)
    print(vendors)
    products_list = helpers.pg_records(request, list_pro, 12)
    category = get_object_or_404(Category, slug=slug)
    cat = category.get_descendants(include_self=True).order_by('tree_id', 'id', 'name')
    last_node = category.get_siblings(include_self=True)

    return render(request, 'shop/category_product_list.html', {'products_list': products_list,
                                                               'category': category,
                                                               'vendors': vendors,
                                                               'cat': cat,
                                                               'last_node': last_node,
                                                               'menu': menu(request),
                                                               'breadcrumbs': breadcrumbs,
                                                               'filter': filter,
                                                               })

我如何实现这个想法？

Answer 1

我已经通过Forms找到了解决方案！它有效，但我仍在尝试。我的解决办法！

#Forms
class BrandForms(forms.Form):
    brand = forms.ModelMultipleChoiceField(queryset=Vendor.objects.none())

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filter_brand = BrandForms(request.GET)
    if filter_brand.is_valid():
        if filter_brand.cleaned_data['brand']:
            print(filter_brand.cleaned_data['brand'])
            list_pro = Product.objects.filter(category__in=Category.objects.get(id=category.id)\
                                               .get_descendants(include_self=True)) \
                                               .annotate(min_price=Min('prices__price'))\
                                               .filter(vendor_id__in=filter_brand.cleaned_data['brand'])

Django-按品牌和其他特征过滤产品类别

1 个答案:

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